Here's a suggestion for the PVP:
they'll be 2 modes: Defence and Attack
Defence: players will be able to build towers and traps and position them on their island. Towers will be visible to other players but not what or how many units they're holding. Towers will have an influence area thus protecting buildings in this area.Traps will be invisible
Attack: players will be able to send an attack to other players if they're in their level category (20's,30's etc..) generals will be sent with troops to attack and their landing zone will be along the coast. the target player will be notified of the incoming attack.
The attacker can attack buildings but if they're protected by towers or traps they will be intercepted.
If the attacker win he'll get the loot from that building. if he loses the target player will earn loot from attacker troops (bronze swords if rec, brew etc...)
can incorporate "help call" by other guild members to defend the target player as well.
Wouldn't that be a nice PVP ?